In my previous post, we created Facebook style wall posts and comments system. In this post, we will implement real time notification when any new post or comment is added and display it on notification click using Knockout JS and SignalR. You might think .. Why notification? Why not to display in real time? If we display it in real time, It will irritate users. Suppose you are reading a post middle of the page, suddenly few new posts appear on top then the post you are reading go down and you have to scroll down to find where it is. That’s why in twitter or Stackoverflow,the notification is used when any new post is arrived and you can check them on notification click. We will implement the same thing for both posts and comments.